Cyclic GMPGuanosine MonophosphateGuanylate CyclasePhosphodiesterase 5 InhibitorsAtrial Natriuretic FactorNitric Oxide3',5'-Cyclic-GMP PhosphodiesterasesSulfonesCyclic GMP-Dependent Protein KinasesPurinonesGuanosineCyclic Nucleotide Phosphodiesterases, Type 5PurinesDibutyryl Cyclic GMPCyclic Nucleotide Phosphodiesterases, Type 2Methylene BlueNitroprussidePhosphodiesterase InhibitorsNucleotides, CyclicNitric Oxide DonorsCyclic AMPReceptors, Atrial Natriuretic FactorPenisPenile ErectionGMP Reductase8-Bromo Cyclic Adenosine MonophosphateNelumboNitric Oxide SynthaseErectile DysfunctionPiperazinesMuscle RelaxationPhosphoric Diester HydrolasesCyclic GMP-Dependent Protein Kinase Type IArginineCyclic Nucleotide Phosphodiesterases, Type 6Aorta, ThoracicMuscle, Smooth, VascularVasodilator AgentsDose-Response Relationship, DrugNatriuretic Peptide, C-TypeSecond Messenger SystemsNitritesFerricyanidesVasodilationomega-N-Methylarginine1-Methyl-3-isobutylxanthineSignal TransductionGuanosine 5'-O-(3-Thiotriphosphate)Cells, CulturedNatriuresisRats, Sprague-DawleyEnzyme InhibitorsNatriuretic Peptide, BrainNG-Nitroarginine Methyl EsterNitric Oxide Synthase Type IIIGuanosine TriphosphateCitrullineEndothelium, VascularNitratesNitroglycerin3',5'-Cyclic-AMP PhosphodiesterasesRabbitsRats, Inbred StrainsKineticsBlood PressureAcetylcholineEnzyme ActivationOxadiazolesBlood PlateletsVerbenaceaeMuscle, SmoothHemodynamicsDisease Models, AnimalNorepinephrineCalciumHeart FailureTime FactorsNitric Oxide Synthase Type IIKidneyS-Nitroso-N-AcetylpenicillamineGuanosine TetraphosphateRats, WistarGuanosine DiphosphateDogsPhosphorylationGuanine NucleotidesBlotting, WesternInosine MonophosphateCyclic CMPTheophyllineBucladesinePhosphorus-Oxygen LyasesRadioimmunoassayAdenosine MonophosphateIMP DehydrogenaseAminoquinolinesCytidine MonophosphateReceptors, Guanylate Cyclase-CoupledChromatophoresCattle